tests: Increase delay for screenshot capture to 2000ms

Author: Kishi85

tests/screenshot_utils.cpp

@@ -235,7 +235,7 @@ namespace screenshot {
 
   bool capture(const std::string &name, const Options &options) {
     // Add a delay to allow UI elements to render before capturing
-    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    std::this_thread::sleep_for(std::chrono::milliseconds(2000));
 
     if (output_root_ref().empty()) {
       return false;